Help me please... $\vv{AB}$ and $\vv{CD}$ are two vectors, and $\vv{AB}$ is not the zero vector. Prove that if the vectors $\vv{AB}$ and $\vv{CD}$ are colinear, then there exists a real number $ k $ such that $ \vv{CD} = k \vv{AB} $. (don't use coordinates !)


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Question Number 217075 by maths_plus last updated on 28/Feb/25
$Help me please... $\vv{AB}$ and $\vv{CD}$ are two vectors, and $\vv{AB}$ is not the zero vector. Prove that if the vectors $\vv{AB}$ and $\vv{CD}$ are colinear, then there exists a real number $ k $ such that $ \vv{CD} = k \vv{AB} $. (don't use coordinates !)$
Help me please... $\vv{AB}$ and $\vv{CD}$ are two vectors, and $\vv{AB}$ is not the zero vector. Prove that if the vectors $\vv{AB}$ and $\vv{CD}$ are colinear, then there exists a real number $k$ such that $\vv C D = k \vv A B$ . (don't use coordinates !)
Commented by maths_plus last updated on 28/Feb/25

$why they banned this post ?$
Commented by MathematicalUser2357 last updated on 01/Mar/25

$No, someone flagged this post as inappropriate .$
Commented by Tinku Tara last updated on 01/Mar/25
This is not inappropriate. This post has no issue.
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